I've followed the instructions from http://www.lucidimagination.com/blog/2009/03/09/nutch-solr/
Had solr up and running before that, could handle test cases, access admin pages, etc.
Copied the nutch schema.xml over to solr as per instructions. Worked, could access admin.
When I added in the requesthandler snippet (see 5d on the website) in solrconfig.xml going to the admin page suddenly tossed off "HTTP ERROR: 404 missing core name in path RequestURI=/solr/admin/index.jsp"
I can't see what in the requesthandler snippet could be causing the admin to fail. Using the feb. 26 build of solr.